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nexus: Use tilegroups for IO bitgen

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2020-10-12 15:57:33 +01:00
parent 10ad7d9cfe
commit af3af59df4
1 changed files with 13 additions and 2 deletions
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15
nexus/fasm.cc
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@ -139,6 +139,17 @@ struct NexusFasmWriter
void push_tile(int loc, IdString tile_type) { push(tile_name(loc, tile_by_type_and_loc(loc, tile_type))); }
void push_tile(int loc) { push(tile_name(loc, tile_at_loc(loc))); }
void push_belname(BelId bel) { push(ctx->nameOf(ctx->bel_data(bel).name)); }
void push_belgroup(BelId bel)
{
int r = bel.tile / ctx->chip_info->width;
int c = bel.tile % ctx->chip_info->width;
auto bel_data = ctx->bel_data(bel);
r += bel_data.rel_y;
c += bel_data.rel_x;
std::string s = stringf("R%dC%d_%s", r, c, ctx->nameOf(ctx->bel_data(bel).name));
push(s);
}
void write_pip(PipId pip)
{
auto &pd = ctx->pip_data(pip);
@ -203,7 +214,7 @@ struct NexusFasmWriter
void write_io33(const CellInfo *cell)
{
BelId bel = cell->bel;
push_tile(bel.tile);
push_belgroup(bel);
push_belname(bel);
const NetInfo *t = get_net_or_empty(cell, id_T);
auto tmux = ctx->get_cell_pinmux(cell, id_T);
@ -221,7 +232,7 @@ struct NexusFasmWriter
void write_io18(const CellInfo *cell)
{
BelId bel = cell->bel;
push_tile(bel.tile);
push_belgroup(bel);
push_belname(bel);
push("SEIO18");
const NetInfo *t = get_net_or_empty(cell, id_T);